The ergonomic society conducted a study that indicated that many people develop severe back problems during adulthood, and that virtually all such people who received chiropractic treatment showed great improvement. therefore, in order to minimize the proportion of the population that suffers from back pain, the ergonomic society recommended that chiropractic treatment be directed toward those adults who suffer from severe back problems.
which of the following is an assumption on which the argument depends?
a. any person who receives chiropractic treatment for back pain may also benefit from other forms of treatment.
b. large insurance carriers cover chiropractic care for back problems to a lesser degree than they do other medical treatments.
c. individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.
d. chiropractic treatment is more effective in treating severe back problems when utilized over a long period of time, as opposed to sporadically.
e. severe back pain and other problems often cause individuals to miss workdays.

C. Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.

Explanation: The assumption of the argument is that which the argument depends upon for its validity. An assumption can be thought of as something that, if not true, invalidates the argument. This is called the assumption negation technique.

the service industry in the united states grew in the late 1800s. what was one effect of that growth?

the number of people with jobs in factories as unskilled workers decreased.

the number of people with jobs in factories as unskilled workers increased.

the middle class grew as people took jobs as clerks, lawyers, and teachers.

the middle class shrank as people left jobs as clerks, lawyers, and teachers.

both the address and the poster use diction to convey their message. diction is defined as a style of writing or speaking based on the types of words chosen in order to send a message. parallelism is when a similar sentence structure is used for several sentences on a text; roosevelt's address doesn't follow that. repetition has to do with repeating a word or sentence in order to emphasize and idea, however neither the poster nor the address use repetion. finally, the address doesn't use images to convey a message.